import { inherits as inherits$0 } from "util";
import Sha256 from "./sha256";
import Hash from "./hash";
/**
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
 * in FIPS 180-2
 * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 *
 */
var inherits = { inherits: inherits$0 }.inherits;
var W = new Array(64);
function Sha224() {
    this.init();
    this._w = W; // new Array(64)
    Hash.call(this, 64, 56);
}
inherits(Sha224, Sha256);
Sha224.prototype.init = function () {
    this._a = 0xc1059ed8;
    this._b = 0x367cd507;
    this._c = 0x3070dd17;
    this._d = 0xf70e5939;
    this._e = 0xffc00b31;
    this._f = 0x68581511;
    this._g = 0x64f98fa7;
    this._h = 0xbefa4fa4;
    return this;
};
Sha224.prototype._hash = function () {
    var H = Buffer.allocUnsafe(28);
    H.writeInt32BE(this._a, 0);
    H.writeInt32BE(this._b, 4);
    H.writeInt32BE(this._c, 8);
    H.writeInt32BE(this._d, 12);
    H.writeInt32BE(this._e, 16);
    H.writeInt32BE(this._f, 20);
    H.writeInt32BE(this._g, 24);
    return H;
};
export default Sha224;
